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Discussion Starter #1
Got my falcon together, it has 10 passes on new build..runs solid 6.28-6.30 in 1\8 mile at 108mph with 1.36----1.38 in the 60ft.. 9.94 in 1\4 mile at 131---132
96215
mph..shift at 6500 and cross the 1/4 at 7500 rpm..tried 6800 and 7000 rpm shift with no change in et.
3000lbs per class rule ladder bar/ coilover all around
418w
14-1 compression
Afr 220 heads
Ported supervic
700/710 lift...273/[email protected]
4.56 gears....28x10.5 slick
C4..5500
Question 1..would a glide be better? And would.it change my trap rpm?
Question 2..even with low 6500 rpm shift i have lot of cubes and run alcohol..would it pick up with a glidden intake..even 1/2 tenth in my class would be worth it

96214
 

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Discussion Starter #3
Most likely if both transmissions were optimal the glide would slow it down. The 3 speed should be faster. The glide will be more consistent and reliable. If you bracket race the car then the glide would be best.
Ill do some bracket stuff just to get seat time but not much
 

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Got my falcon together, it has 10 passes on new build..runs solid 6.28-6.30 in 1\8 mile at 108mph with 1.36----1.38 in the 60ft.. 9.94 in 1\4 mile at 131---132 View attachment 96215 mph..shift at 6500 and cross the 1/4 at 7500 rpm..tried 6800 and 7000 rpm shift with no change in et.
3000lbs per class rule ladder bar/ coilover all around
418w
14-1 compression
Afr 220 heads
Ported supervic
700/710 lift...273/[email protected]
4.56 gears....28x10.5 slick
C4..5500
Question 1..would a glide be better? And would.it change my trap rpm?
Question 2..even with low 6500 rpm shift i have lot of cubes and run alcohol..would it pick up with a glidden intake..even 1/2 tenth in my class would be worth it

View attachment 96214
Car looks and is running good congrats!!
 

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Not much of a comparison, I only had my c4 last for about 6 passes. Then the direct drum cracked and lost all gears. But it went 7.07 foot braking, then put a 1.76 glide in, with a brake and 8" PTC converter, converter used from a buddy, was behind a 400 inch small block Chevy 6000 stall. Haven't flashed it behind my 302. So far, fastest pass has been 7.00 at 97, but usually low 7.(teens) @96. Don't regret the glide swap at all. But all I do is bracket race.
 

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What weight? When I had my 408w, 12.5 comp, ran those same numbers with c4 and 4.10 gears but trapped higher at 135. Swapped to a glide and slowed in the 60', but picked up everywhere after that. 9.94 with c4, 9.85 with glide, same mph, crossed at ~7K. Shifted at 6700. 2900 pounds raceweight. I ran with the 408 combo and glide one season, then ran last season with it behind my 427W, swapped all the internals over to an ATI case this past winter and all the glide internals looked brand new. My old C4 would have needed a complete refresh. I say go glide.
 

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Yes, has to be 3000lbs for rules i had to add 165 lbs of lead to get it there
ok, i thought they were pretty light, having to add weight for class racing makes sense. zinging that stock block, I never pushed mine past 7200, but it still looked new when I parted it out. if you get the right converter I think you'd like the glide, I sure do.
 

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Discussion Starter #11
ok, i thought they were pretty light, having to add weight for class racing makes sense. zinging that stock block, I never pushed mine past 7200, but it still looked new when I parted it out. if you get the right converter I think you'd like the glide, I sure do.
Plans was to do the stock block this year and get bigs worked out, brand new car,make sure it drives good and straight etc..over the winter probally remove the 165lbs of lead and put fiberglass doors on, i had it scaled few weeks ago..car is 2600 lbs..each door is 60lbs...so if i remove the 165 and get new 12 lb doors, replace the 35lb hood i can get it down to around 2400lbs...with me in it would be 2600lbs
 

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Car in my avatar had a 350 turbo, went to 1.76 glide. Lost a little in 60 but picked it up the rest of the run. I foot brake and the glide is a lot easier to stage. 1.82 glide is a little faster but don't expect it to last.
 

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A few years back I swapped my C4 for a Powerglide. One of the best things I ever did to that car. To expand on this a bit...
Car was a 2,800 pound Fox body with a 427" SBF that made 700 hp. At the time I ran a 28x10.5" tire on the marginally prepped local tracks. It was primarily a super street (10.90 index) car at the time, so I never chased the 60' set up. The few non-throttle stop passes I made, the car burned the tires off the hit with the two speed (it would only have been worse with a three speed). A GOOD converter guy is key with any automatic, but even more so with a two speed.
 
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